| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 20.10 (b) | 20.94 (b) | 1.042 | − | 4.114 (b) | 5.925 (b) |
| 2 | (n,elastic) | 6.498 (b) | 7.334 (b) | 1.129 | − | 2.293 (b) | 4.399 (b) |
| 4 | (n,inelastic) | ( E-thr = 206.3 keV ) | 546.7 (mb) | 1.480 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.447 MeV ) | 1.208 (b) | 2.370 (mb) | |||
| 17 | (n,3n) | ( E-thr = 17.23 MeV ) | − | 54.60 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.266 MeV ) | 2.413 (mb) | 581.9 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.724 MeV ) | 2.446 (mb) | 623.7 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.78 MeV ) | 0.000 (b) | 301.4e-12 (b) | |||
| 102 | (n,γ) | 13.60 (b) | 13.61 (b) | 1.000 | 101.8 (b) | 1.719 (mb) | 42.26 (mb) |
| 103 | (n,p) | ( E-thr = 144.8 keV ) | 41.23 (mb) | 175.6 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.475 MeV ) | 3.768 (mb) | 788.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.456 MeV ) | 156.0 (μb) | 36.05 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.530 MeV ) | 93.84e-12 (b) | 26.63e-12 (b) | |||
| 107 | (n,a) | 30.74 (μb) | 30.73 (μb) | 1.000 | 4.597 (mb) | 17.69 (mb) | 444.4 (μb) |
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These cross sections are calculated from JENDL-4.0 at 300K.
The background color of each cell noted a cross section means the order of the cross-section value.
The unit of cross section, (b), means barns, and SI prefixes are used as following.
(kb) → 103(b), (mb) → 10−3(b),
(μb) → 10−6(b), (nb) → 10−9(b).
MT is a number that defines a reaction type. For the relation between MT and reaction type, please see here or refer to the manual of ENDF formats.
Maxwellian Average :
where T denotes the temperature, and kB the Boltzmann constant.
The upper and lower limits of integration, EL and EU
are set to 10−5 eV and 10 eV, respectively.
Resonance Integral :
with EL = 0.5 eV and EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
with EL = 10−5 eV and EU = 20 MeV.
The parameters a and b are 0.988 MeV and 2.249 MeV−1, respectively.
Westcott g-factor :
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